dvestion 110 marks 1. Telephone interviews of 372 employees of a large electroni
ID: 3372203 • Letter: D
Question
dvestion 110 marks 1. Telephone interviews of 372 employees of a large electronics company found that 65% were dissatisfied with their working conditions. Al statistic B) parameter 2. A poll is conducted in which professional musicians are asked their ages A) experiment B] observational study 3. The year of manufacture of a car A) nominal atio C) interval D) ordinal 4. The number of violent crimes committed in a city on a given day in a random sample of 110 days is a random variable. A) discrete 8) continuous 5. Which branch of statistics deals with the organization and summarization of collected information? A) Computational statistics C) Survey design Bl Inferential statistics DI Descriptive statistics 6. The colors of book covers on a bookshelf A) quantitative B) qualitative 7. the numbers on the shirts of a boy's football team Al qualitative 8) quantitative 8. An ogive is a graph that represents cumulative frequencies or cumulative rela tive frequencies. The points labeled on the horizontal axis are the A) Midpoints C) Upper class limits B) Lower class limits D) Frequencies Page 2 of 7Explanation / Answer
1)
Statistic
Small data obtained from a study of a large quantity of numerical data.
2)
Observational study
observational study draws inferences from a sample to a population where the independent variable is not under the control of the researcher.
3) interval
4) continuous variable
A continuous variable is the opposite of a discrete variable, which can only take on a certain number of values
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